Transformer.



PATENTED OUT. 23, 1906.

G. E. LORD. TRANSFORMER.

APPLICATION FILED 0013,10, 1905.

'Whwsssss:

IM/ENTDR:

UNrrEn sra'rns rarnsr orrrcn CHARLES E. LORD, OF NORlNOGD, OHIO, ASSIGNUR TU THE BULLUCK ELECTRIC MANUFAGTURlNG COMPANY, A CORPORA'HON F OHIO.

TRANSFORMER E'specification of Letters yatent.

racemes Oct. as, race.

' To all whom it may concern:

Be it knownthat 1, CHARLES E. Loni), a citizen of the United States, residing at Nor-- wood, in the county. of Hamilton and State of Ohio, have invented certain new and useful rm rovements in Transformers, of which the fol owing is a full, clear, and exact specification.

My invention relates to transformers for high-voltage alternating currents, andespecially to those transformers which are cooled by a forced circulation of air.

The object of my invention is to provide an improved air-blast ventilating means where by both the core and coils can be effectively cooled by a single forced circulation of air.

In carrying out my invention I maintain a'forced circulation of a cooling medium through the passage-ways in the core and coils successively and provide means where.

by the said medium is cooled after it has passed through the passage-Ways in one of said members.

More specifically considered my invention consists in a transformer having a laminated core provided with horizontal passage-ways,

primary and secondary coils spaced apart forming vertical assageways, a plurality of ulpwardly-exten mg nozzles leading from t e passage-ways in the core to the passageways between the coils, whereby air can be forced successively through the passageways in the core, through the nozzles, and through the passage-ways between the coils in such a manner that cooling air-currents will be drawn upward through the last-named pas-- sage-Ways, so as to mix with and cool the first-named air-current s.

My invention still further consists of the details of construction and combinations of elements described in the specification and set forth in the appended claims.

For a better understanding of my invention reference is had to the accompanying drawings, in which-- Figure 1 1s a section of my improved transformer, taken auproximately a oiig the line 1 1 of Fig. 2. Big. 2 is a transverse section, on a reduced scale, taken along'the line 2 .2 oi Fig. 1; and Fig.3 1s a section, on a reduced scale, taken along the line 3 3 of Fig. 1.

Referring to the fi urcs of the drawings, 1 have shown a cast-metal base 10, consisting of an outcr wall 11 and two horizontal spaced municatcs with the air passage-we. s 19 between the groups of laminae 18. T e core is divided into two portions forming the air passa e-way 21. Supported on the core, preferab y by the wooden block 22, are the primary and secondary coils 23, made in this case of concentrically wound strap copper. The coils are divided into sections, which are spaced apart, so as to form the vertical air passa e-ways 24. The coils extend down into the rectangular opening in the base.

The inner portions of the coils are separated irom the core by the plates or sheets of insulating material 25, and the outer portions of the coils are separated from the core by the sheets of insulation'flfi, forming an insulatingrasing which extends through the end plate :27 at the top of the core,and tl'irough the opening in the base, fitting tightly against the flanges l2 and 13. The lower end ofthe casing 126 communicates with the outside. It will be seen that the casing 26 and walls 11, 12, and 13 of the base form a continuous air passage-way 28, which does not communicate with the passage-ways between. the coils. Communicating with this air passage-way are a plurality of air-inlet tubes or pipes 29. The flange 13 is provided with a large number of openings 30, whereby air entering the air passage-way .28 by the tubes :29 will pass readily into the air passage-way l0.

The portions of the insulating-sheets 26 between the horizontal passage-Ways 19 in the (ore and the 'crtical passage-ways 24. be t'wcr-ii the coils are perforated, there being a plurality of openings or pcrhirations for each horizontal passage-nay l9. As shown in Fig. 3, the perforations ,or openings in the different .rows are staggered with respect to each other. The insulating material is spread outward, forming short necli non continuous air passage-way 20, which com- Secured to the insulating-sheets l on ding each neck portion 32 is a tuho or nozzle 33. All these nozzles directed upward and inward, y means of these perforations and the air-currents which enter the pasys 19 and 20 pass directly into the "e-ways between the coils. i ...o plates or sheets 25, which separate the portions of the coils from the core, are ed in a similar manner. Nozzles 34, .o noazle.-;' attached to the A 2.36, are secured to the plates over perforatiiiin. The perforations or openlugs and nozzles in each row are staggered with .ipect to the openings and nozzles in the accnt rows, inthc preceding case. Th the air-currents which enter the pas- .y 21 can passdirectly' into the spaces as coils. The operation of my improved ventilating 1 ice and the action of the upwardly-extending nozzles are as follows: Air from any suitable fan or blower is led to the passagea, 28 by tl 1e tubes 29, from which passageway it passes to the passage-ways 20 and 21 and from those passageways to the horizontal passage-ways 19 in the core. The air after cooling the core passes through the nozzles and is directed 'upward through the issagc-ways between the coils and passes out of the casing through the perforations 16 i i cap 15, as is indicated by the arrows in 'llhe streams of air passing uowardly nozzles through the spaces between the coils tend to create a vacuum below the carries, and thereby drawcool air through "cm of the base and insulating tuhu :rtsnsion, to the spaces between the coils,

ated by the v It/lcill. arrows in Fig. 1. v or words, currents of cool air are inn the spaces between. the coils by the tr-cams of air from the nozzles in. a manner .ostantially the same as fluid drawn into n injector for feeding water to boilers.

The induced currents of air mix with the warmer air which has passed through the core and lowers the temperature of the latter c YTGHCS of air to a suliicient degree to main-- L the coils at a suitably low temperature.

The details of my invention are susceptible of "various modifications and changes, and I aim in my claims to cover all such modificawhich do not depart from the spirit of mv uvention.

What l claini as new, and desire to secure by Letters Patent, is-

in. a transformer, a core provided with ting passage-ways, primary and seccoils having ventilating passageand means whereby air forced throu d1 the passage-ways in the core and coils will re after it has passed through part of ssa ways. transformer, core provided with "I vent: l a

ventilating passageways, coils mounted on the core and provided with ventilating passagcw rays, and means whereby air forced through; the passage-ways in the core and coils will be cooled. after it has passed through the pass; -c ways in one of said members.

3. In a transformer, a core provided with ventilating assagc-ways, coils mounted on the core ant provided with ventilating passageways, and means whereby air forced through the passage-ways in the core and coils will be cooled after it has passed through the passage-ways in said core.

4. in a transformer, a core provided with ventilating passageways, primary and secondary coils separated by ventilating passage-ways, and. means whereby a forced circulation of a cooling medium through the passage-i in one of said members will induce air ourrents in the passage-ways of the other member.

5. In a transformer, a core provided with ventilating passage-ways, primary and secondary coils separated by passage-ways, the passageways between the coils communicating with the passage-ways in the core, so that a cooling medium can be forced first through the passage-ways in the core and "thenthrough the passage-ways between the coils, and means whereby the flow of the cooling medium will induce air-currents in the passageways between the coils, which air-currents mix with and lower the temperature of the cooling medium.

6. in a transformer for alternating currents, a core provided with ventilating passage-ways, primary and secondary ooi 51 separated by ventilating assage-Ways which communicate with the rst narned passageivays, and means whereby air forced through the passagc ways of the core into the passage-ways of coils will induce air-currents in the latter passage-ways, which aircurrcnts mix with the air from the core passage-way '7. in a transformer for" alternating currents, a core provided with ventilating passageways, primary and secondary coils spaced apart forming ventilating passageways, insulatingsheets between the assageways in the core and coils, and 1102?: es leading from the passago waus in the core and extending upward into 1; c passage-ways between the coils, whereby air-currents passing through the pasi ways between the coils will induce cooling air-currents in said lastnamcd passage-ways which mix with and cool the lirst-specified air-currcnts in a transformer, a core com osed of laminae arranged in groups forming horizontal ventilating passage-ways, primary and second coils spaced apart forming vertical ventil. ting passa. e-ways, and a plurality of upwardlyalirectcc nozzles extending from each horizontal passageway in the core to IIO seems setrersl pssssgewsys between the coils, any forced suoeessively through the we; s ill'bhi, core, through the nozl t ough the psssege-wsys in the iii cease an upwsrd flow oi ooolirig-sir i a transformer, a core proi ided with listing passageways, rim ery and secdsriy soils-spaced apart iormirig ventilatp'ssssge-wsys .Thllfih communicate with the psssege-wsys the core, and means for eosseeting the psssege-wsys in the core with source oi sir-supply, said essssge-wsys in the coils communioeting st the top and Botterm with the outer atmosphere, wherebthere may be s free circulation of air throng coiis in edditiori to the forced circulation Zifi in e transformer, core provided with ventiletmg pssssge-weys, GOliS spaced apart forming ventiistin pssssgewsys, sheets of illifltlifivtlfi msteris: smrou irig the sides of the soils end formii'ig is see and bottom, moses fo connecting the peesge-ws-ys in the core t as source of oomseed sir, and tor directing the air ircm core pssssg'e'wsys into the coil pssse es/eye e11 spwerddirection, whereby i113; siemizronts wiilbe drawn the the pssssgeweysbetween the coils. i

open at its top a ssegewvsys between the coils from the ower end.

11. In a transformer, 21 core provided with ventilstiiig passageways, coils spaced a art forming ventilating assage ways w 'oh communicate at the sides of the coils with the ssse e-weys in the core, and at the ends of the coils with the atmosphere, means for connecting the pessege-weysin the core with a source of air-supply, and means for directing the forced air toward the top of the possageways between the coils, whereby air will be drawn into the said passage-ways from the bottom.

12. In e transformer, a core providedwith ventilating passage-ways, and primary end:

secondary coils having ventiletmggsss'age- Ways, the whole being so constructs and er ranged, that air forced through the passe. e-

ways in the core into the passage-Ways in t e i coils will induce sir-currents in the letter passage-weys.

in testimony whereof I afiix my signature in the presence of two witnesses.

CHARLES E. LORD.

' Witnesses:

FRED J. KINSEY, ARTHUR F6 Kwis. 

